These element types were designed to improve corrosion resistance in order this material can be used in aggressive furnace environments where chemical attack of the element’s Sic material is significant leading to shortening of life achieved. All the electrical specifications and shapes are the same as types (E), (F) and (U). It can be used in particularly aggressive furnace atmospheres which contain nitrogen, hydrogen, alkali, lead, halogen and others. Various coatings can be applied to improve oxidation resistance and corrosion resistance depending on applications.